Device for monitoring gear lever position

ABSTRACT

A device for monitoring gear lever position consists of one internal tube, one external tube, one adjust handle, one transpicuous cover and one flexible piece. The said internal tube comprises of one ring-shape outer rim, one slot formed on the said outer rim of suitable position and one hollow and axial sheath, further, a suitable position of the said slot is installed a window. A convex fish-shaped lens is designed on an imagine line which from rider&#39;s eyes to position ring, the imagine line is not perpendicular to the axial sheath. Via the design of the convex fish-shaped lens, the position symbols are enlarged. The window only shows single position symbol in use for not confusing with other symbols. Thus, rider easily monitors and knows the actual gear level position.

1. FIELD OF THE INVENTION

[0001] This invention is about a device for monitoring gear lever, especially about the device installed on handle of bicycle for monitoring gear lever position, and further that rotating handle to shift gear lever.

2. BACKGROUND OF THE INVENTION

[0002] There are two sorts of gear lever shifting for multi-speed bicycle since long time ago up to now. The prior art is the device by turning gear lever, and the current fashion is the device by rotating handle to shift gear lever for changing speed.

[0003] However, the device of the current fashion for rotating handle to shift gear lever is short of a device that monitors gear lever position for that where gear lever is. By traditional way, the device of turning gear lever is depended on that bike rider touches onto the gear lever by fingers to be sensed and shifted gear lever position, even bike rider cannot clearly look at the device. On the other hand, the device for current fashion is that bike rider must directly read gear lever position symbol (generally it is a numeral) on gear lever device to know where the gear is. For dimensional consideration, the gear lever position symbol is not large enough to read usually. Hence, under the conditions of lacking light, passing through tunnel, not concentrating on gear lever position in high speed, not close to gear lever device, etc., the gear lever position is not easily and rapidly judged. Therefore, the present gear lever device is improved as well.

SUMMARY OF THE INVENTION

[0004] The main object of this invention is to offer a device for monitoring gear lever position, which makes that bike rider easily, rapidly and clearly monitors the shifted gear lever position, and the above shortness is solved.

[0005] The second object of this invention is to offer a device for monitoring gear lever position, which makes that bike rider easily monitors the shifted gear lever position even under lightless circumstance.

[0006] The third object of this invention is to offer a device for monitoring gear lever position, which makes that an auxiliary light source is applied to increase readable ability for the device when under lightless circumstance.

[0007] To reach foresaid objects, the invention at least consists of one internal tube, one external tube, one adjust handle, one transpicuous cover and one flexible piece. The said internal tube comprises of one ring-shape outer rim, one slot formed on the said outer rim of suitable position and one hollow and axial sheath for fixing bike handle. Wherein, the outer diameter of the said sheath is smaller than the inner diameter of the said outer rim so as to forming a storage room between the sheath and the outer rim. On a suitable position of the said slot, there is a window going through and connecting between slot and the said storage room. The said external tube is a hollow structure and surrounds on sheath, thus, the relative rotating motion between external tube and sheath is happened. There is a position ring for showing gear lever position installed on the storage room relative to the external tube. The said window is just above the position ring, and plural gear lever position symbols are on position ring. An adjust handle surrounds the external tube, and they rotate together. Between the internal side of the position ring of external tube and the external side of sheath is set a flexible piece. The transpicuous cover wraps inside the slot, and a fish-shaped lens is set on transpicuous cover. The fish-shaped lens is a convex lens, and the position for fish-shaped lens is designed on an imagine line which from rider's eyes to position ring, and fish-shaped lens is in between as well. Defining a line Z that is perpendicular to the axial direction of sheath and the foresaid imagine line is line S, the angle between line Z and line S is from 25 to 70 degrees. The design is to amplify the position symbols of window, and further that window shows only single position symbol for not confusing rider.

[0008] In a preferred embodiment, the position symbols are made by fluorescence, therefore, rider can easily read symbols when in lightless circumstance as passing through tunnels.

[0009] Another preferred embodiment, a position of outer rim of internal tube relative to window is installed a light source for lighting up to position ring, such that, the symbols are still readable even in lightless circumstance.

[0010] The further preferred embodiment, installing following on the outer rim of internal tube: an electrical source and a switch. The electrical source controls light source via the switch, which means turning switch on and off to make electrical source and light source working together.

[0011] The fourth preferred embodiment is that the light source is LED.

[0012] The fifth preferred embodiment is that installing a wire guide on internal tube. The wire guide is hollow to have wire, speed-change wire, going through, then passing by internal tube and connecting both ends, which are transmission device and external tube. To rotate the external tube for tightening and loosing the speed-change wire, and the transmission device is controlled to change speed as well.

[0013] For further understanding the invention, following is the description with drawings for the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0014]FIG. 1 is the side view of the preferred embodiment of a device for monitoring gear lever position for the invention.

[0015]FIG. 2 is the three-dimension view of a device for monitoring gear lever position as showing in FIG. 1.

[0016]FIG. 3 is the detail drawing of a device for monitoring gear lever position as showing in FIG. 1.

[0017]FIG. 4 is the A-A cross-sectional view of internal tube 10 in FIG. 2. (external tube 20 and adjust handle 30 not shown)

[0018]FIG. 5 is the top view of a device for monitoring gear lever position for showing the relative positions of position symbol 211, window 112 and fish-shaped lens 41.

[0019]FIG. 6 is another embodiment of transpicuous cover 40 of a device for monitoring gear lever position for the invention.

[0020]FIG. 7 is the further embodiment of a device for monitoring gear lever position for the invention.

[0021]FIG. 8 is the top view of the embodiment in FIG. 7.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0022] One of the features of the invention is the window design, which only shows the position symbol in use, more, the window with transpicuous cover of convex fish-shaped lens is another feature, and the fish-shaped lens is positioned in between an imagine line from rider's eyes to window. Wherein, the imagine line is not perpendicular to the window, and there is an angle between the imagine line and the line vertical to the window. Via the design of the convex fish-shaped lens, the position symbols are enlarged. The window only shows single position symbol in use for not confusing with other symbols. Thus, rider easily monitors and knows the actual gear level position.

[0023] Following is listed several preferred embodiments for detail structure, motion, effect and other feature of a device for monitoring gear lever position of the invention.

[0024] Refer to FIG. 1 to FIG. 4, which is the first preferred embodiment of the invention. Wherein, FIG. 1 is the side view of the preferred embodiment of a device for monitoring gear lever position for the invention, FIG. 2 is the three-dimension view, FIG. 3 is the detail drawing, FIG. 4 is the A-A cross-sectional view of internal tube 10 in FIG. 2 (external tube 20 and adjust handle 30 not shown).

[0025] The device 1 for monitoring gear level position comprises of an internal tube 10, an external tube 20, an adjust handle 30, a transpicuous cover 40, a flexible piece 51, a shield 52 and a nut 53.

[0026] The internal tube 10 is made of plastic injection molding or casting mold, comprising of an outer rim 11 with ring shape, a slot 111 formed on suitable position of the said outer rim 11, a wire guide 12 and an axial sheath 13 fixed on adjust handle 60 of bike (not shown in figure). Wherein, the outer diameter of sheath 13 is smaller than the inner diameter of outer rim 11, thus, there is a ring storage room 14 formed in between the outer rim 11 and sheath 13. A window 112 set a suitable position on slot 111 for connecting through slot 111 and storage room 14. The wire guide 12 on internal tube 10 is designed a channel 121 for speed-change wire (not shown in figure) going through from channel 121 of wire guide 12 to storage room 14 of internal tube 10.

[0027] External tube 20 is a hollow module, which surrounds over the sheath 13 and the relatively motions with sheath 13. In the preferred embodiment, the external tube 20 is made of plastic injection molding or casting mold for better consideration. The position in external tube 20 relative to storage room 14 is set an arc-shaped of position ring 21. After assembly, window 112 of internal tube 10 is just corresponding to position ring 21. There are plural position symbols 211 on position ring 21 representing gear lever position, ex. numerical symbols, alphabets, literal symbols, etc. Herein, the position symbols 211 on position ring 21 are that adhering a strip sticker with printed symbols onto position ring 21. Another way, the symbols are directly printed on position ring 21. Further, those symbols made by fluorescence to make rider easily monitoring them when in lightless circumstance, ex. tunnels.

[0028] Adjust handle 30 surrounds external tube 20, and there is a buckling structure between inner surface of adjust handle 30 and outer surface of external tube 20, external tube 20 and adjust handle 30 can thus rotate together. In the preferred embodiment, the buckling structure is constructed by that plural axial grooves 22 are installed on outer surface of external tube 20, and plural convex strips (not shown in figure) are set on inner surface of adjust handle 30. The grooves 22 and the convex strips are relatively positioned for buckling up. The buckling structure can be other prior arts as well. The better material for adjust handle 30 is soft material, ex. rubber, silicon or other plastics. Plural convex ribs or flipper-shape structures set on outer surface of adjust handle 30 for improving comfort and stability of holding and rotating.

[0029] Between inner surface of position ring 21 and other surface of sheath 12 is a flexible piece 51. A fixing point 511 on flexible piece 51 is against into one of plural concave points (not shown in figure) on inner surface of position ring, and each concave point fixes gear lever on that point and represents a gear lever position. The flexible piece 51 and relative structures are prior art, so as to that no more is described for that.

[0030] Wire guide 12 on internal tube is with screw for tightening nut 53. Wire guide 12 is also with a channel 121 for a speed-change wire (not shown in figure) going through from channel 121 of wire guide 12, internal tube 10 and then to a concave set 23 of external tube 20, and connecting and fixing on a suitable position of external tube 20. Another end of speed-change wire is connected and fixed on a transmission device (not shown in figure). Rotating the external tube 20 to tighten or loose the speed-change wire for reaching speed-change goal. The connection of nut 53 and speed-change wire and speed-change technology are prior arts, so as to that no more is described for that.

[0031] Please refer to FIG. 4 and FIG. 5, transpicuous cover 40 wraps inside slot 111. A convex fish-shaped lens 41 is on the transpicuous cover 40, and which is positioned in between an imagine line from rider's eyes, window 112 to position ring 21. The fish-shaped lens 41 is the important feature of the invention. Normally, the imagine line from rider's eyes to position ring 21 is not vertical to position ring 21, there is an angle between the imagine line and the line perpendicular to position ring 21. If fish-shaped lens 41 is designed on the central window 112, the enlarging effect of the convex fish-shaped lens 41 is hardly reached, further, rider is easily confused by deformed symbols. As showing in FIG. 4, a line Z perpendicular to sheath 13 is defined by window 112, the foresaid imagine line is defined as line S, thus the angle between line Z and line S is from 25 to 70 degrees. Therefore, the fish-shaped lens 41 is to enlarge position symbols 221 of window 112, and rider then monitors those symbols easily.

[0032] Referring to FIG. 5, both rims of transpicuous cover 40 and slot 111 are set plural positioning structures which are relative each other (ex. as convex points 42 and concave points 113 shown in FIG. 5). The plural positioning structures are not set proportionably on the two rims (generally called go/no go structure), thus, transpicuous cover 40 only inserts into slot 111 in single direction for buckling. Further, the relative positions for buckling are not missed when assembling fish-shaped lens 41 and window 112. Referring to FIG. 6, the side surface of transpicuous cover 40 toward slot 111 can be printed diagram 43 for shielding other portion except window 112, for instance, printing trade mark, product number, etc. Another embodiment, the diagram 43 can be printed on single shielding piece, and the position on shielding piece relative to window 112 is an open hole. When assembling, shielding piece set between transpicuous cover 40 and slot 111 can also reach same function.

[0033] Please refer to FIG. 7 to FIG. 8, which are another preferred embodiment. The embodiment is mainly added a light source 16 (ex. LED) on where the position of outer rim 11 of internal tube 10 relative to window 112, and further related components comprising of: an electrical source 17 and a switch 18. The electrical source 17 controls light source 16 via switch 18, which means turning switch on and off to make electrical source 17 and light source 16 working together, and position ring 21 can be light up. Therefore, the position symbols 211 can be seen even at night.

[0034] It may thus be seen that the objects of the present invention set forth herein, as well as those made apparent from the foregoing description, are efficiently attained. While the preferred embodiments of the invention have been set forth for purpose of disclosure, modifications of the disclosed embodiment of the invention as well as other embodiment thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments that do not depart from the spirit and scope of the invention. 

What is claimed is:
 1. A device for monitoring gear lever position, which can be installed on bike, the device includes: an internal tube, which comprises of one ring-shape outer rim, one slot formed on the said outer rim of suitable position and one hollow and axial sheath for fixing bike handle, wherein, the outer diameter of the said sheath is smaller than the inner diameter of the said outer rim so as to forming a storage room between the sheath and the outer rim; on a suitable position of the said slot, there is a window going through and connecting between slot and the said storage room; an external tube is a hollow structure and surrounds on sheath, thus, the relative rotating motion between external tube and sheath is happened, there is a position ring for showing gear lever position installed on the storage room relative to the external tube, the said window is just above the position ring; and an transpicuous cover, which wraps inside the slot, and a fish-shaped lens is set on transpicuous cover, the fish-shaped lens is a convex lens, and the position for fish-shaped lens is designed on an imagine line which from rider's eyes to position ring, and fish-shaped lens is in between as well.
 2. The device for monitoring gear lever position as cited in claim 1, wherein, furthermore, it includes a hollow adjust handle surrounding the external tube.
 3. The device for monitoring gear lever position as cited in claim 2, wherein, adjust handle is made of soft material for improving comfort and stability of holding and rotating.
 4. The device for monitoring gear lever position as cited in claim 2, wherein, plural convex ribs are set on outer surface of adjust handle.
 5. The device for monitoring gear lever position as cited in claim 2, wherein, adjust handle surrounds external tube, and there is a buckling structure between inner surface of adjust handle and outer surface of external tube, external tube and adjust handle can thus rotate together.
 6. The device for monitoring gear lever position as cited in claim 2, wherein, between the internal side of the position ring of external tube and the external side of sheath is set a flexible piece.
 7. The device for monitoring gear lever position as cited in claim 1, wherein, wire guide is also with a channel for a speed-change wire going through from channel of wire guide, internal tube and then to external tube, and connecting and fixing on a suitable position of external tube, another end of speed-change wire is connected and fixed on a transmission device, rotating the external tube to tighten or loose the speed-change wire for reaching speed-change goal.
 8. The device for monitoring gear lever position as cited in claim 1, wherein, plural position symbols are set on position ring.
 9. The device for monitoring gear lever position as cited in claim 8, wherein, the position symbols are numerical symbols.
 10. The device for monitoring gear lever position as cited in claim 8, wherein, the position symbols on position ring are that adhering a strip sticker with printed symbols onto position ring.
 11. The device for monitoring gear lever position as cited in claim 8, wherein, the position symbols are made by fluorescence.
 12. The device for monitoring gear lever position as cited in claim 1, wherein, a side surface of transpicuous cover toward slot can be printed diagram for shielding other portion except window.
 13. The device for monitoring gear lever position as cited in claim 1, wherein, shielding piece is set between transpicuous cover and slot, the position on shielding piece relative to window is an open hole, and diagram can be printed on shielding piece for shielding other portion except window.
 14. The device for monitoring gear lever position as cited in claim 12, wherein, the diagram includes trade mark, product number, etc.
 15. The device for monitoring gear lever position as cited in claim 1, wherein, the position for fish-shaped lens is designed on an imagine line which from rider's eyes to position ring, further, defining a line Z that is perpendicular to the axial direction of sheath and the foresaid imagine line is line S, the angle between line Z and line S is from 25 to 70 degrees.
 16. The device for monitoring gear lever position as cited in claim 1, wherein, a position of outer rim of internal tube relative to window is installed a light source for lighting up to position ring.
 17. The device for monitoring gear lever position as cited in claim 16, wherein, further installing following on the outer rim of internal tube: an electrical source and a switch, the electrical source controls light source via the switch, which means turning switch on and off to make electrical source and light source working together.
 18. The device for monitoring gear lever position as cited in claim 16, wherein, the light source is LED.
 19. The device for monitoring gear lever position as cited in claim 1, wherein, both rims of transpicuous cover and slot 111 are set plural positioning structures which are relative each other, the plural positioning structures are not set proportionably on the two rims, thus, transpicuous cover only inserts into slot in single direction for buckling, further, the relative positions for buckling are not missed when assembling fish-shaped lens and window.
 20. A device for monitoring gear lever position, which can be installed on bike, the device includes: an internal tube, which comprises of one ring-shape outer rim, one slot formed on the said outer rim of suitable position and one hollow and axial sheath for fixing bike handle, wherein, the outer diameter of the said sheath is smaller than the inner diameter of the said outer rim so as to forming a storage room between the sheath and the outer rim; on a suitable position of the said slot, there is a window going through the slot; and a transpicuous cover, which wraps inside the slot; the feature is: a fish-shaped lens is set on transpicuous cover, the fish-shaped lens is a convex lens, and the position for fish-shaped lens is designed on an imagine line which from rider's eyes to position ring, the imagine line is not perpendicular to the axial sheath. 